| 摘要 |
System and apparatus (1) for moving a tubular between a substantially horizontal position and an upward angled position, e.g. substantially vertical position. The apparatus comprises a base (3), and a boom (4) pivotally attached to the base about a horizontal boom pivot axis between a substantially horizontal position and an upward angled position, e.g. substantially vertical position. A boom pivot drive (50) is mounted on said base and adapted to pivot the boom. A tubular gripper (7;80) is attached to the boom and adapted for gripping the tubular (20, 20', 20"). The boom pivot drive comprises a central gear wheel (53) that is rotatable mounted on the base about a central gear wheel axis (54) parallel to the horizontal boom pivot axis (6), which central gear wheel is connected directly or via a transmission to the boom. One or more drive gear members (51) are each rotatable mounted on the base and each rotatable about a corresponding drive gear member axis (52), meshing with the central gear wheel. One or more motors (55) connect to said drive gear members and allow to pivot the boom. |
